Arkheologicheski Muzei. НУМИЗМАТИКА И СФРАГИСТИКА. Volumes I–IV (Sofia, 1992–1997), complete, plus the first part of Volume V (1998) and the second part of Volume VI (1999). Varying 8vo formats, original pictorial card covers. First volume slightly worn, rest fine. Focuses on ancient and medieval coins, most particularly those that circulated in what is now Bulgaria.